60 million years of glaciation in the Transantarctic Mountains
The Antarctic continent reached its current polar location ~83 Ma and became shrouded by ice sheets ~34 Ma, coincident with dramatic global cooling at the Eocene-Oligocene boundary. However, it is not known whether the first Antarctic glaciers formed immediately prior to this or were present signifi...
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ftleedsuniv:oai:eprints.whiterose.ac.uk:191354 2023-05-15T13:57:32+02:00 60 million years of glaciation in the Transantarctic Mountains Barr, I.D. Spagnolo, M. Rea, B.R. Bingham, R.G. Oien, R.P. Adamson, K. Ely, J.C. Mullan, D.J. Pellitero, R. Tomkins, M.D. 2022-09-21 text https://eprints.whiterose.ac.uk/191354/ https://eprints.whiterose.ac.uk/191354/1/s41467-022-33310-z.pdf en eng Springer Science and Business Media LLC https://eprints.whiterose.ac.uk/191354/1/s41467-022-33310-z.pdf Barr, I.D., Spagnolo, M., Rea, B.R. et al. (7 more authors) (2022) 60 million years of glaciation in the Transantarctic Mountains. Nature Communications, 13 (1). 5526. cc_by_4 CC-BY Article PeerReviewed 2022 ftleedsuniv 2023-01-30T22:49:39Z The Antarctic continent reached its current polar location ~83 Ma and became shrouded by ice sheets ~34 Ma, coincident with dramatic global cooling at the Eocene-Oligocene boundary. However, it is not known whether the first Antarctic glaciers formed immediately prior to this or were present significantly earlier. Here we show that mountain glaciers were likely present in the Transantarctic Mountains during the Late Palaeocene (~60–56 Ma) and middle Eocene (~48–40 Ma). Temperate (warm-based) glaciers were prevalent during the Late Eocene (~40–34 Ma) and, in reduced numbers, during the Oligocene (~34–23 Ma), before larger, likely cold-based, ice masses (including ice sheets) dominated. Some temperate mountain glaciers were present during the Miocene Climatic Optimum (~15 Ma), before a widespread switch to cold-based glaciation. Our findings highlight the longevity of glaciation in Antarctica and suggest that glaciers were present even during the Early-Cenozoic greenhouse world. Article in Journal/Newspaper Antarc* Antarctic Antarctica White Rose Research Online (Universities of Leeds, Sheffield & York) Antarctic The Antarctic Transantarctic Mountains |
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Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
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ftleedsuniv |
language |
English |
description |
The Antarctic continent reached its current polar location ~83 Ma and became shrouded by ice sheets ~34 Ma, coincident with dramatic global cooling at the Eocene-Oligocene boundary. However, it is not known whether the first Antarctic glaciers formed immediately prior to this or were present significantly earlier. Here we show that mountain glaciers were likely present in the Transantarctic Mountains during the Late Palaeocene (~60–56 Ma) and middle Eocene (~48–40 Ma). Temperate (warm-based) glaciers were prevalent during the Late Eocene (~40–34 Ma) and, in reduced numbers, during the Oligocene (~34–23 Ma), before larger, likely cold-based, ice masses (including ice sheets) dominated. Some temperate mountain glaciers were present during the Miocene Climatic Optimum (~15 Ma), before a widespread switch to cold-based glaciation. Our findings highlight the longevity of glaciation in Antarctica and suggest that glaciers were present even during the Early-Cenozoic greenhouse world. |
format |
Article in Journal/Newspaper |
author |
Barr, I.D. Spagnolo, M. Rea, B.R. Bingham, R.G. Oien, R.P. Adamson, K. Ely, J.C. Mullan, D.J. Pellitero, R. Tomkins, M.D. |
spellingShingle |
Barr, I.D. Spagnolo, M. Rea, B.R. Bingham, R.G. Oien, R.P. Adamson, K. Ely, J.C. Mullan, D.J. Pellitero, R. Tomkins, M.D. 60 million years of glaciation in the Transantarctic Mountains |
author_facet |
Barr, I.D. Spagnolo, M. Rea, B.R. Bingham, R.G. Oien, R.P. Adamson, K. Ely, J.C. Mullan, D.J. Pellitero, R. Tomkins, M.D. |
author_sort |
Barr, I.D. |
title |
60 million years of glaciation in the Transantarctic Mountains |
title_short |
60 million years of glaciation in the Transantarctic Mountains |
title_full |
60 million years of glaciation in the Transantarctic Mountains |
title_fullStr |
60 million years of glaciation in the Transantarctic Mountains |
title_full_unstemmed |
60 million years of glaciation in the Transantarctic Mountains |
title_sort |
60 million years of glaciation in the transantarctic mountains |
publisher |
Springer Science and Business Media LLC |
publishDate |
2022 |
url |
https://eprints.whiterose.ac.uk/191354/ https://eprints.whiterose.ac.uk/191354/1/s41467-022-33310-z.pdf |
geographic |
Antarctic The Antarctic Transantarctic Mountains |
geographic_facet |
Antarctic The Antarctic Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://eprints.whiterose.ac.uk/191354/1/s41467-022-33310-z.pdf Barr, I.D., Spagnolo, M., Rea, B.R. et al. (7 more authors) (2022) 60 million years of glaciation in the Transantarctic Mountains. Nature Communications, 13 (1). 5526. |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766265202660081664 |